. 2015 Jul 6;10(7):e0131205. doi: 10.1371/journal.pone.0131205

Table 2. Adjusted and weighted prevalence ratios of colorectal cancer screening among adults aged 50–75 from the Swiss Health Interview Survey 2007 and 2012 (n = 13,170).

	Hemoccult test in past 2 years					Endoscopy in thepast 10 years					Any CRC Screening
	2007		2012		p-value for trend ¹	2007		2012		p-value for trend ¹	2007		2012		p-value for trend ¹
	PR²	95%CI	PR²	95%CI		PR²	95%CI	PR²	95%CI		PR²	95%CI	PR²	95%CI
Socioeconomic characteristics
Household income (USD) (ref:≤2,000					0.880					0.221					0.397
2001–4000	1.11	0.73–1.70	0.97	0.68–1.39		1.29	0.80–2.08	1.11	0.79–1.56		1.10	0.81–1.51	1.07	0.83–1.38
4001–6000	1.21	0.78–1.88	1.04	0.71–1.52		1.26	0.75–2.11	1.35	0.95–1.92		1.19	0.86–1.66	1.23	0.94–1.60
>6001	1.23	0.76–1.97	1.05	0.69–1.60		1.78	1.01–3.12	1.75	1.21–2.54		1.37	0.96–1.96	1.45	1.09–1.92
Education (ref: compulsory)					0.519					0.337					0.657
secondary	0.98	0.69–1.38	0.99	0.75–1.31		0.87	0.60–1.26	0.89	0.69–1.14		1.02	0.78–1.32	0.92	0.76–1.11
tertiary	1.10	0.75–1.60	1.27	0.83–1.53		0.84	0.56–1.27	0.91	0.69–1.20		1.02	0.76–1.36	0.96	0.78–1.19
Employed (ref:unemployed)	0.73	0.56–0.94	1.08	0.84–1.37	0.038	1.00	0.73–1.38	0.92	0.75–1.12	0.896	0.85	0.70–1.04	0.97	0.83–1.13	0.418
Sociodemographiccharacteristics
Age 65–75 (ref: 50-64y)	0.93	0.71–1.21	1.15	0.89–1.47	0.856	1.32	0.97–1.80	1.31	1.07–1.60	0.726	1.06	0.87–1.29	1.21	1.04–1.41	0.876
Women	0.77	0.62–0.97	0.62	0.51–0.76	0.014	0.79	0.61–1.03	0.85	0.72–1.00	0.498	0.79	0.66–0.93	0.80	0.71–0.91	0.864
Married(ref: not married)	0.87	0.71–1.06	1.27	1.04–1.56	0.006	1.14	0.88–1.46	1.12	0.95–1.33	0.643	0.97	0.83–1.14	1.17	1.03–1.33	0.146
Not Swiss (ref: Swiss)	0.94	0.65–1.36	1.49	1.16–1.91	0.016	1.26	0.77–2.05	1.16	0.90–1.50	0.855	1.16	0.87–1.56	1.20	1.00–1.43	0.520
Urban areas (ref: Metro areas)					0.080					0.001					0.007
Medium size urban areas	1.00	0.80–1.24	0.92	0.75–1.12		0.75	0.56–1.01	0.87	0.74–1.03		0.92	0.78–1.10	0.90	0.79–1.02
Small size urban areas	0.92	0.69–1.23	0.78	0.60–1.00		0.84	0.61–1.16	1.00	0.82–1.22		0.86	0.69–1.08	0.87	0.74–1.02
Rural areas	1.01	0.74–1.38	0.65	0.45–0.93		1.61	1.21–2.15	0.93	0.71–1.21		1.24	1.00–1.52	0.84	0.69–1.05
Health services
GP visit in past 12m (ref: No)	2.27	1.55–3.22	2.26	1.73–2.96	0.952	2.40	1.54–3.75	1.42	1.16–1.74	0.094	2.23	1.66–2.98	1.71	1.45–2.02	0.260
Specialist visit in past 12 m (ref: No)	1.13	0.90–1.41	1.01	0.84–1.21	0.706	1.04	0.80–1.36	1.42	1.20–1.67	0.110	1.09	0.92–1.29	1.21	1.07–1.37	0.300

1. P-value for time-trend were estimated as follow: for each predictor (education, income, etc.), we estimated separately one multivariate model including all predictors plus the interaction term between the predictor and the wave. We reported only the p-value. 2. Prevalence ratios are adjusted for all variables in the table as well as for health statues which included self-rated health, body mass index, physical symptoms, psychological distress, hospitalization and smoking. Ref: reference category